AK4388A AKM [Asahi Kasei Microsystems], AK4388A Datasheet - Page 10

• Manufacturer Part Number: AK4388A
• Description: 192kHz 24-Bit 2ch ?? DAC
• Manufacturer: AKM [Asahi Kasei Microsystems]

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A digital de-emphasis filter is built-in (tc = 50/15µs). The DEM pin is internal pull-down pin. The digital de-emphasis
filter is enabled by setting the DEM pin to “H”. Refer to “FILTER CHARACTERISTICS” regarding the gain error when
the de-emphasis filter is enabled. In case of double speed mode (MCLK=256fs/384fs) and quad speed mode
(MCLK=128fs/192fs), the digital de-emphasis filter is always off.
MS1008-E-02
De-emphasis Filter
SDTI
SDTI
BICK
(64fs)
BICK
(64fs)
LRCK
LRCK
Mode 3
Mode 2
0
0
23:MSB, 0:LSB
23
1
1
22
23:MSB, 0:LSB
23
2
2
22
Table 6. De-emphasis Filter Control (Normal Speed Mode)
3
Lch Data
22
1
23
23
Lch Data
DEM pin
0
1
24
24
1
0
Don’t care
0
Figure 6. Mode 2 Timing
Figure 7. Mode 3 Timing
25
Don’t care
30
De-emphasis Filter
- 10 -
31
31
0
0
OFF
23
ON
1
1
22
23
2
2
22
3
(default)
22
Rch Data
1
23
Rch Data
23
0
1
24
24
Don’t care
0
25
Don’t care
30
31
31
[AK4388A]
0
0
23
2010/09
1
1
22
23